Furnace construction



Feb. 10, 1925.

R. D. FOLTZ FURNACE CONSTRUCTION Filed Aug. 23, 1923 aaZZZ Patented Feb. 19, 1925..

hmrosh sas mzy h nasr omen, mm, sr m fmmhi'nhhsicx' x -c e w .1, H G LLI Q e A Q QMII N um s "To allcbhom itmy concern: 5 Be 'it'known-that lyRamo'mi D; FoL'rz,-f" a citizenof-the'i-United -'States, residing at known as the *furnace; arch and" an asso the 'expans'ionand' contraction of the struc a 1 I 1 en ed "archesf'in which the refractories are Application iil eej lagaqt'28; izfiifserialno. 058,293, I

East Orange; in the" county of Essex and State of New" Jersey; have invented certain new and iiseful'Iln roveinent's. in Furnace". Constructionsjofw i'ch. the following is a' specification.

Thi invention relates furnace {conjstru'cthin, and pertainstoi nproven ents in, the construction of 'the' portions commonly ciated apron wall or icurtainwall;

of the invent on" 1s- The general" urpose the "rov'isi'onfo aconstruction which will; I be e ectiveto-ma ntaini'the des red relatlon- 7 sh j ofanapron or curta'mTwaH with'an' v are of the flat or -suspended; type andflwith the associated portions offtlie installationi such as; boiler pfirts. It j'irequently occurs I v e=-= to provide an apron gore upward continuation- Io'f he -refriictOry they will not be forced' oil'tlv of T position by turev incident to changes initemperature. gie' use off'so-called flat-arches; (or susung' from sup ort'ing: meinbers disposed above'a urnace c amberfthefproper support" of the curtain or apron-- wall portions presents certain diificultiegdue to the'{ :Eact 1 that its lowerfiliniit must? conform *to v the shape ofth' rear end of the arch andfjitmust besupportedacross the entire I width g of the furnace chamber. Provision has-been' made heretofore for carrying" the apron" for curtain 1 wall upon the terminal ortion; "of

the arch or ju on 'rnetallic brac e'ts asso cia ted therewit and'arranged in suchdis-Q posal asto' be covered inwa'rdly bythere "fractories included in the arch and wall p.013; tions; "-When so supported; it'sometiines oow nace temperatures, the portions of the/apron;- or'curtain wallfwill befjwarpedor s rung -'in-" ours that incident to the eflects of the fur-"'1 wardly," sometimes to a degreeiw ich will cause portions of the wall to ofverturnL other instances'portions-ofthe wall may be proyides'"a n p I v I A I jvention maybe embodied, but it is to be i nd'er-' F'stoodthat the sameLis-here .presented' for the a v of "illustrationfl only', and that fit" is notto be accorded any interpretation having .the eil'ect-of limiting the ;int ention1wh ieh I purportftosecurgjshortof its true. and "most I s t onrwhne- *dis laced tosuch an extent that they contact ad 'acent" boiler parts, a "condition, which is likely to resultin serious injury-thereto. In some instances this displacement of the cur talin' orapron" wall portions" by 1 the temperatui'e" influences is facilitated by-the circumstance that the bottom refractories in tween those refractoriesand juxtaposed refraotori es'-inthe arch is limited by, the inter;

positionof'the metallic membersr By-means v v "ofethepresentjimprovernents I 'am enabled to obv iate' these 1 difliculties and proyide for [the 'maintenanceof the apron 'orfcurtain wall seourely in proper position, so that'it ma'yw exercise properly its intended function 'f iSi Part-of the ifurnace closureand-a's; an "instrumentality for properly directing" and fjdistributing the furnace heat and products {of combustlon.

comprehensivescope' infithe art. In the drawiniforminga partv'of this specification, whic fsaid embodimentis shown,"

" Fig v l'ffis a partsectionalehvationhfh terminal portion of a' arch shown I s taken 3 suhstantially -the i lin.

.113 is arefractoi'y'tile of convention l forr'n"suitable 'for*use in anassembly ein Fi' and 5f are perspective "jviewfef If "For the purposebfthis appIicatiodIjhaVe 'eleete'dto present oneform in 'whijch'theinp r i -relaio smpm associated b oiler part a d urmin, wa11;-;*

Fig!2 -is.,a ,parlrhorizontal section of I reton which theisectionillustratedin i 9 inet-a ic brackets or supporting meta hers 'edioriu'se in the structure.

desi

thereferen'ce character 1' designates lateral 'y 'lle'jnature of'the 1 ve ti'on will best die f ascertained "byr'eference to these fdrawingsin'detail," whence" it will'be understood-that] ortions of a furnacech'amber designed 7 ton ord-a co nbustion space in association] with a boiler here illustratedas of "a; Vertical a type and including water t bes 2 seated a headeret. As parts of the flat or suspended nace arch. At the terminus of the arch, as

where the combustionchamber connects with the boller passes, or where the refractory arch surface changes direction toward-the vertical, are suspended wedge shaped tile 8 to provide a continuation of the refractory surface around a bend oran arch nose. In association with thisportion of the arch issupported a bracket 9havingawallsupporting shelf 9 extending a above the uppermost Wedgeshaped tile, any space intervenin betW-een those tile-and, theshelf being lled with refractor ies 10 laid upon the topmost ofthettile 8. Forms which the bracket 9, .may take are illustrated in Figs t and 5,

, these forms being adapted for support on the tile supporting members .6. The shelf .pbrtion 9 presents agflat upper surface adapted to function as a support for a tile laid flat thereupon,-.but the shelf is of sub- Q stantially smaller'area than a tile.of .-the

. width, of the courses supportedon the tile 1 supporting members 6. Arplurality of the brackets 9 are arranged in collateralvdis posal at the marginal portion-of the arch I and preferably in alignment with the courses of tile carried on the tile supporting members. 1 At the forward portion of. the shelf. 9 the bracket is provided with an upstand inglug or flange 9 of. roper Width to engage in the suspensions ot of a tile 7", such I is laidupon the shelf portion 9% The height of the tile retaining lug 9* may be of sufficient i to engage only one of suchtile, or it may be cient height to engage in the'slots of a' as with the form illustrated in F ig. 5. F or-- as that illustrated inFig. 3, whenythetile of su plurality of such tile when superimposed,

- wardly from the tile retaining lug 9 the "bracket advantageously may be formed with a horizontal flange 9 of sufficient Width to engage the lateral faces of the suspension shoulders 7* of the tile. By virtue of this arrangement of parts the tile supported on p the shelf portion 9 is retained thereon against movement in any horizontaldirection suificient to permit dislodgment' of the tile. However, the tileretaining lug has sufmembers. With the tile thus supported, their lateral margins are maintained in ficientplay in the slot of the tile to accommodate the'us ual amount of expansion invthose f alignment with the lateral margins of tile 1 carriedv on the tile supporting members 6,, so that they maybe regarded as, lying in the Asfwill be observed in Fig. 2, the tile overlaps-all margins same longitudinal courses.

" members.

of the shelf, and the space interrening between the tile and the subjacent refractories 10is grouted with fire; clay, ganister, or other suitable refractory material such as will effectively seal the shelf portion from the interior of the furnace. The tile thus supported .on the shelf portions of the brackets, and there retained. by the tile restraining lugs, constitutes the bottom course of the apron or curtain Wall which may be built upwardly upon them out of ordinary fire brick 11, bond betweenthebottom tile and those thereabove being secured in the customary fashiong The apron or curtainwall may take theform appropriate to its particularlocation-and function, and itwill be seen that it constitutes an upward continuation ofjlthe. refractory'surface afforded by the tile 7 and 8. 4;

. .It will be observed that by virtue of this construction fixed anchorage: i afforded for the entire curtain Wall in properassociation with the terminus of the arch and withassociated portions of the installation, as the engagement of the foundation tile with the tile retaining lugs positivelyjprevents their being displaced, irrespective of the limited bond obtainable between those tile and the shelf portionsv 9? or. the refractories 10, ,and

this anchorageiof. the foundation, tileis effective tofhold, the superimposed refractories v11 in positionby virtueof the bond between them. .Thus, not only-is thev integrity of the closureniairitainechbut thecurtain wall portions areretained in thedesired relationship to distribute fand direct the furnace gases properly with respect to 'the boiler tubes. Moreover, the refractories in the curtain or battle wall. are thus securely maintained against overturn ng or. reepmg into contactwithhthe boiler. tubes, :1 contingency likely "to result in serious (consequences. One featureofadvantage resides .in the fact thatthef construction requires no additional special form .of refractories, as tile of the-sort customarily employed-inthe. arch construction are suitable for use asthe foundation tile.,-.A; furtherradvantagein the construction lies .in: the fact that it, af-

fords means .for sustaining an apron or bafile wall portion in a more or less sloping. position after the fashion of the arrangement illustrated in Fig. 5.gl .1ile =in all cmthe supporting bracket from the interior of the furnace in such fashion as to give, it full protection from the heat The, portions of.

the bracket projectingat the. exterior of the structure function effectively to radiate heat 125 from. the parts enclosed by the refractory bodiments it facilitates the closing fl:'- of 7.

Certain features of,construetion herein sed are claimed ina co-pending ap licationjof Louis H. Hosbein-,-Serial; No.

. tile retaining lugs, tile supported in hori-.

What I claim is:

1. In 'furnace construction, the combination with an arch portion, of brackets supported in association therewith, aid brackets being provided with shelf portions and zontal position by the shelf portions and engaging 'the'lugs, and refractories supported on said tile'to form in conjunction therewith a wall portion associated with the arch portion. V

2. In furnace construction, the.combination withan arch portion, of brackets supported in association therewith, said brackets being providedwith shelf "portions and tile engaging ported on the shelf portions and engaging said lugs, whereby saidtile are retained against shifting-off of the shelf portions. In furnace construction, the combination with tile disposed in coursesto form an arch portion, of brackets associated with the archportion, said brackets having shelf portions and tileretaining lugs, and tile supported on' said shelf portions and retained by said lugs in alignment with the courses in the arch portion. i e 4. In furnace construction, the combination with an arch portion, of collaterally arranged brackets supported in association therewith, said brackets having shelf portion and tile retaining lugs, and tile sup-- ported on the shelf portions" above the arch I portion and retained against dislodgment by said lugs.

5. In furnace construction, the combination with refractories suspended to provide an arch portion,

of brackets associated with said arch portin,'said brackets having'shelf portions and tile retaining lugs, tile supported on said shelf portions and engaging ,said lugs, whereby they are retained against displacement, and refractories laid upon said tile to form an apron wall portion as a con- '6. In furnace construction, the combination with beams arranged above the furnace engaging .chamber, of tile supporting members suspended from saidbeams, tile suspended on said tile supporting members to form an arch portion, bracketsv supported on the tile supporting members, said brackets having shelf portions and tile retaining lugs, and tile supported on the shelf portions and said lugs, whereby said tile are retained against displacement from the shelf portions.

7. In furnace construction, the combination of tile supporting members sus ended above the furnace chamber, refractories S1187 pended on said tile supporting members to form an arch portion, brackets supported on said tile supporting members at the terminus of the arch portion, said. brackets lugs, and slotted tile sup-' having shelf portions and tile retaining lugs,

and t1le resting 011 said shelf portions and engaging said lugs, whereby said tile are retained in alignment with refractories in the arch portion.

' 8. In furnace construction, the combination with tile supporting members, of refractories suspended thereon to. form an arch portion, brackets supported in association with the terminus of said arch portion, said brackets having shelf portions and tile retaining lugs, and tile supported on said shelf portions with the lateral sides of juxtaposed tile in contact, said tile engaging said lugs, whereby said tile are retained against relative displacement;

'9. In furnace construction, the combination of brackets supported above the furnace chamber, refractories supported in association with said brackets to form a refractory arch portion between them and the furnace chamber, said brackets having shelfrportions and tile retaining lugs, tile disposed on said shelf portions and engaging said lugs, arid a curtain wall portion built upon said ti e. Y

10. In furnace construction, the combination of brackets supported above the furnace chamber, refractories suspended therefrom to form an arch nose, said brackets having shelf portions and tile retainin lugs, tile supported on said brackets an engaging said lugs, whereby said tileare retained against dislodg'ment, and an vapron wall portion built upon said tile.

. 11. In furnace construction the combination of brackets collaterally arranged above retaining portions extending above the shelf portions, and slotted tile supported on the shelf portions and engaging the tile retaining portions, whereby the tile are retained against displacement with respect to the brackets;

12. In furnace construction, in combination, brackets pendulously suspended above the furnace chamber, refractories pendentl supported thereon to form a refractory arc portion below the brackets, said brackets having shelf portions projecting over some of the suspended refractories and tile re taining portions extending above said shelf portions, slotted tile lying upon said shelf portions and engaging said retaining portions, and refractories laid on said tile to form an apron wall portion extending upwardly from the arch. g

In testimony whereof I have hereunto subscribed my name. 

